Wave Transmitter

picture info	Wave Transmitter The Wave Transmitter was a radio transmitter/receiver, described in a patent by Roberto Landell de Moura in 1904, capable of transmitting audio via radio waves as well as light (similar to a photophone). It was developed after many years of Landell de Moura experimenting with multi-function devices that were combinations of megaphones, photophones, and radio telegraphs. History Background Landell de Moura began experiments in wireless communication in the mid 1890s."Landell de Moura" by Arthur Dias, ''The Brazil of To-day'', 1907, pages 38-39. He worked with electrically powered megaphones, photophones, and when radio technology came along, incorporated radio telegraphy. By 1900 Landell de Moura was giving public demonstration of a device that seemed to use light (a photophone), a device he received a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Esq Eletr Transm Ondas Color Esq or ESQ may refer to: * Employee screening questionnaire, a psychological test developed by Canadian psychology professor Douglas N. Jackson * Esquire (abbreviated Esq.), a modern, informal, non-royally awarded title * Ensoniq ESQ-1, a synthesizer released by Ensoniq in 1985 * Infiniti ESQ The is a subcompact crossover SUV (B-segment) produced by the Japanese car manufacturer Nissan since 2010. Debuted as a production vehicle at the 2010 Geneva Motor Show in March, it was introduced to North America at the 2010 New York Inter ... , a Chinese-Japanese subcompact SUV {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	1899 In Brazil Events in the year 1899 in Brazil. Incumbents Federal government President: Manuel Ferraz de Campos Sales Vice President: Francisco de Assis Rosa e Silva Governors * List of governors of Alagoas: Manuel Jose Duarte (until 17 June), Francisco Manuel dos Santos (starting 17 June) * Amazonas: José Cardoso Ramalho Júnior * Bahia: Luís Viana * Ceará: Antônio Nogueira Accioli * : Urbano Coelho de Gouveia * Maranhão: João Gualberto Torreão da Costa * Mato Grosso: Antônio Cesário de Figueiredo (until 4 July); João Pedro Xavier Câmara; Antônio Leite de Figueiredo; Antônio Pedro Alves de Barros (from 15 August) * Minas Gerais: Silviano Brandão * : Pais de Carvalho * : Antônio Alfredo Mello * Paraná: Santos Andrade; then José Bernardino Bormann; then Santos Andrade * : Joaquim Correia de Araújo (until 4 April); Sigismundo Antônio Gonçalves (from 4 April) * : Raimundo Artur de Vasconcelos * Rio Grande do Norte: Joaquim Ferreira Chaves * Rio Grande do Sul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Brazilian Inventions Brazilian commonly refers to: * Brazil, a country * Brazilians, its people * Brazilian Portuguese, its dialect Brazilian may also refer to: * "The Brazilian", a 1986 instrumental music piece by Genesis * Brazilian Café, Baghdad, Iraq (1937) * Brazilian cuisine ** Churrasco, or Brazilian barbecue * Brazilian-cut bikini, a swimsuit revealing the buttocks * Brazilian waxing, a style of pubic hair removal * Mamelodi Sundowns F.C., a South African football club nicknamed ''The Brazilians'' See also * Brazil (other) * ''Brasileiro ''Brasileiro'' is a 1992 album by Sérgio Mendes and other artists including Carlinhos Brown which won the 1993 Grammy Award for Best World Music Album. It marked Mendes's return to Elektra Records since 1979's ''Magic Lady'' with Brasil '8 ...'', a 1992 album by Sergio Mendes * Brazilian jiu-jitsu, a martial art and combat sport system * Culture of Brazil * Football in Brazil {{Disambiguation Language and nationality disambiguation pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	History Of Radio The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of broadcasting. Discovery In an 1864 presentation, published in 1865, James Clerk Maxwell proposed theories of electromagnetism and mathematical proofs demonstrating that light, radio and x-rays were all types of electromagnetic waves propagating through free space. Between 1886 and 1888 Heinrich Rudolf Hertz published the results of experiments wherein he was able to transmit electromagnetic waves (radio waves) through the air, proving Maxwell's electromagnetic theory. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Radio Technology Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves. They can be received by other antennas connected to a radio receiver; this is the fundamental principle of radio communication. In addition to communication, radio is used for radar, radio navigation, remote control, remote sensing, and other applications. In radio communication, used in radio and television broadcasting, cell phones, two-way radios, wireless networking, and satellite communication, among numerous other uses, radio waves are used to carry information across space from a transmitter to a receiver, by modulating the radio signal (impressing an information signal on the radio wave by varying some aspect of the wave) in the transmitter. In radar, used to locate and track objects like ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Universidade Federal De Campina Grande The Federal University of Campina Grande (, UFCG) is a public university whose main campus is located in the city of Campina Grande, Paraíba, Brazil. Together with the Federal University of Paraíba, it is the main university of the state of Paraíba, Brazil. Established after splitting from UFPB in 2002, it is one of the leading technological and scientific production institutes of northeastern Brazil, being mentioned in a 2001 edition of the Newsweek magazine as a technopole - among 9 other around the world - that represents a new vision for technology. It was again quoted in 2003 as the Brazilian Silicon Valley. It is one of the five institutions to have a continuous international concept from the Coordenadoria de Aperfeiçoamento de Pessoal de Nível Superior (grade over 5) in the Electrical Engineering Postgraduate Program, and one of the two to simultaneously hold a concept of 5 stars in the Technological Department (Electrical Engineering and Computer Science) from the M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Universidade Federal Do Paraná The FISU World University Games, formerly the Universiade, is an international multi-sport event, organized for university athletes by the International University Sports Federation (FISU). The former name is a portmanteau of the words "University" and "Olympiad". The Universiade is referred to in English as the World University Games or World Student Games; however, this latter term can also refer to competitions for sub-University grades students. In July 2020 as part of a new branding system by the FISU, it was stated that the Universiade was to be officially branded as the FISU World University Games. The most recent summer event was the 2021 Summer World University Games held in Chengdu, China from 28 July – 8 August 2023, after being postponed twice due to the COVID-19 pandemic. It effectively replaced the 2023 Summer World University Games, that was set to be held in Yekaterinburg, Russia, which were cancelled due to the Russian invasion of Ukraine. The most recent wint ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Rio Grande Do Sul Rio Grande do Sul (, ; ; "Great River of the South") is a Federative units of Brazil, state in the South Region, Brazil, southern region of Brazil. It is the Federative units of Brazil#List, fifth-most populous state and the List of Brazilian states by area, ninth-largest by area and it is divided into 497 municipalities. Located in the southernmost part of the country, Rio Grande do Sul is bordered clockwise by Santa Catarina (state), Santa Catarina to the north and northeast, the Atlantic Ocean to the east, the Uruguayan Departments of Uruguay, departments of Rocha Department, Rocha, Treinta y Tres Department, Treinta y Tres, Cerro Largo Department, Cerro Largo, Rivera Department, Rivera, and Artigas Department, Artigas to the south and southwest, and the Argentina, Argentine Provinces of Argentina, provinces of Corrientes Province, Corrientes and Misiones Province, Misiones to the west and northwest. The capital and largest city is Porto Alegre. The state has the highest lif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Fiber Optic An optical fiber, or optical fibre, is a flexible glass or plastic fiber that can transmit light from one end to the other. Such fibers find wide usage in fiber-optic communications, where they permit transmission over longer distances and at higher bandwidths (data transfer rates) than electrical cables. Fibers are used instead of metal wires because signals travel along them with less loss and are immune to electromagnetic interference. Fibers are also used for illumination and imaging, and are often wrapped in bundles so they may be used to carry light into, or images out of confined spaces, as in the case of a fiberscope. Specially designed fibers are also used for a variety of other applications, such as fiber optic sensors and fiber lasers. Glass optical fibers are typically made by drawing, while plastic fibers can be made either by drawing or by extrusion. Optical fibers typically include a core surrounded by a transparent cladding material with a lower index ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]